1979 - 1983 AMC Spirits and 1978 - 1983 AMC Concords > '78 - '79 AMC V8 304 Engine

304 2V versus 258 2V?

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tlake:

  I was wondering if there is much of a performance difference between these two motors? Anyone have personal experience of driving 'em in the same kind of body e.g. Concord AMX, 1978/79 Pacer? Power rating they are only 5-10 hp different, but do they perform much differently in practice?  ???

  258 2V 8.0:1 comp ratio

mudkicker715:
Imo yes they feel noticeably stronger. compred in same 73 commando. my eagle is different i also changed axle ratio at same time

tlake:

--- Quote from: mudkicker715 on February 25, 2012, 08:23:34 AM ---Imo yes they feel noticeably stronger. compred in same 73 commando. my eagle is different i also changed axle ratio at same time

--- End quote ---

 I recall Car and Driver speculated how nice it would have been to try the 304 in the Eagle wagon body, but they said they didn't want to give up even one CAFE 1 mpg, so they were happy with the 258. Not that they had a choice because the 258 was mandatory by 1980.

Ohio AMX:
I've had both in Hornets and Pacers. The 304 definitely feels like it has more torque. It also sounds a lot better!

Pat:
Have driven Gremlins with both (owned the 304) brother owned both & traded years ago. Think there were different gears in them, but the 304 was MUCH better!!!!

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